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6 Sheets-Sheet 1.

(No Model.)

T. ROBERTS.

STREET LOOOMOTIVE.

No. 396,113. Patented Jan. 15, 1889.

Q Maw ATTORNEY,

flag:

ATTORNEY,

(No Model.-)

(No Model.) 6 Sheets-Sheet 3.

T. ROBERTS.

STREET LOGOMOTIVE.

o. 396,113. Patented Jan. 15, 1889.

WITNESSES: l/III/E/I/TOR.

A TTOR/VEK (No Model.)

6 Sheets-Sheet 4.

T. ROBERTS.

STREET LOGOMOTIVE.

Patented Jan. 15, 1889.

WITNESSES NV -N A ZVLOI'IZdfiRgZerZ A TS NEY 6 Sheets-Sheet 5.

(No Model.)

THO-BEETS, STREET LOGOMOTIVE.

1 Patented Jan. 15, 1889.

WIT ESSES 1N VENTOR= 7Q I/zom m6 ROZQY'ZQ; I I 3y 742's @i Sheet 6.

6 Sheets (No Model.)

T. ROBERTS. STREET LOUOMOTIVE.

Patented Jan. 15, 1889.

o oo 00 000 000 00 000 INK/ENTQJR; 1% arn/zq-s JR 0 13m" ATTEJRNEY WITNESSES UNITED STATES PATENT OFFICE.

THOMAS ROBERTS, OF BALTIMORE, MARYLAND, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-HALF TO JOHN STANLEY FREDERICK, JOHN CARSON, MAMIE B. GOTT, M. J. KILROY, AND WILLIAM DUGDALE, ALL OF SAME PLACE.

STREET-LOCOMOTIVYE.

SPECIFICATION forming part of Letters Patent No. 396,1 13, dated January 15, 1889.

Application filed November 22, 1887. Serial No. 255,890- (No model.) i

To all whom it may concern: 7 Be it known that I, TnoMAs ROBERTS, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have invented certain new and useful Improvements in Street-Locomotives and other Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in street and other locomotives, traction, dummy, and portable engines; and the object of I 5 the invent-ion is to produce a street locomotive 0r engine that'is noiseless and smokeless, and also to prevent the exhaust-steam usually escaping into the air from being seen, but to lead it into a condenser and in a noiseless 2o manner; also, to arrange the operating-engines under the floor of the locomotive and inc-losing them in a casing provided with hinged sides and ends, so as to be enabled to gain access to said engines for examination or re- 2 5 pair. l urthermore, to produce a very simple and economical condenser, and, finally, to facilitate the travel of street locomotives and cars on ordinary streets and roads without danger to persons or animals.

\Vith these ends in view my invention consists in providing a strect-locomotive, portable, traction, or dummy engine with a generator for producing hydrocarbon vapors to be utilized as the fuel for gcnerati ng the steam in the boiler, and thereby dis mnsing with the coal and wood now used and avoiding smoke.

It consists, also, in means to prevent the exhaust-steam from escaping into the air, causing the disagreeable noise and sight, by condensing it and utilizing the condense-water.

It also consists in placing thcoperating-engines under the bottom of the locomotive and inclosing them in acasing having hinged sides and ends for gaining access to the parts.

It further consists in the construction of a condenser having perforated removable partitions or diaphragms arranged in inclined, horizontal, or vertical manner; and it finally consists in the construction of certain details and arrangement of parts, as will be more fully described hereinafter, and specifically pointed out in the claims, reference being had to the accompanying drawings and the letters of reference marked thereon.

Like letters indicate similar parts in the difierent figures of the drawings, in which Figure 1 represents a vertical longitudinal section of my improved street-locomotive, partly in elevation. Fig. 2 is a vertical crosssection of the same, partly in elevation. Fig. 3 is a horizontal section, partly in plan, on lines a: a; and y y of Fig. 1. Figs. 4, 5, and 6 are similar views of a modification, with a condenser having horizontal diaphragms.

In the drawings, A represents a street-locomotive, which may be employed on elevated railways or on ordinary street-railways, and with suitable changes and modifications may be used as a dummy, traction, portable, or other engine. The engines li, preferably of the inclined kind, are placed under the floor or bottom ofthe locomotive, and are inclosed in a casing, C, having openings with doors 0 in its sides or ends, which may be hinged, so

as to gain access to said engines for examination, repairs, or replacing any of their-.partsu The steam-boiler l), hydrocarbongenerator E, condenser Ii, water-tanks F, and connectingpipes are arranged above the floor, so as to be readily accessible. 4

The boiler I) is of the vertical kind, having tubes or flues, and is provided with any suitable superheating device, (I, and placed in the furnace. The steam generated in the boiler is conveyed into the superhcater (Z by v a pipc,'c.

The generator E consists of 'a shell or casing, in whichis placcd a secondary casing, 6, containing a number of tubes, and is provided with a top and bottom. The top has attached to it a suit-able safety-valve, b, and the bottom is connected by a pipe, (1, to the superheater in the boiler-furnace, which conveys the superheated steam into the generator. Said steam passes through the tubes and 5 by passing through the perforations e' in the diaphragm enters into the hollow head or top of the generator E, and thence passes down and surrounds the inner casing, while the liquid carbon or petroleum, or its equiva- I00 lent, is pumped orothcrwise conveyed into the inner shell and among the tubes. The carbon vapors pass from the inner casing through small perforations e in the upper tube-sheet and holes e' in the diaphragm above it and mingle with the superheated steam. If dosircd, a non -co11ducting covering may be placed around the generator to prevent radiation. The upper tube-sheet is secured to the diaphragm by' means of bolts or brace-tubes c. A branch pipe, a connects with the pipe (1 to convey steam into the space around the shell to serve as non-conductor and prevent condensation of the vapors." In the upper part of the generator is arranged a perforated outlet-pipe, f, by which the hydrocarbon vaporsare conveyed to the burners g in. the furnace of the'boiler and serve to generate the steam. Suitable valves or cocks must be placed in all of the pipes for regulat ing them. A tank, F, for the feed-water is arranged on each side of the locomotive, and a pump, G, is provided for filling, &c., and an injector or its equivalent serves to force the water into the boiler. The condensed water also passes into said tank. A suitable steamgage and gage-cocks are provided to indicate the pressure of steam and the level of the water. One or more generators may be employed, as desired.

The condenserv H, placed on one or both sides of the locomotive, consists of a rectangular, circular, or other shaped shell of any suitable material, and is providedwit-h a series of perforated plates or diaphragms, h, made of wood, metal, or other material, and made removable. They are supported in grooves 71. or lugs h on the inside of the shell, or in any other manner desired. The exhauststeam from the engines is conducted by the pipe -i into a perforated pipe, is, and by it is distributed in the condenser and there condensed, thus preventing noise by exhausting as ordinarily. V

A tank, I, for the condensing-water or injection-water is placed immediately under the 1 roof and receives its water from the pump G,

and suitable pipes lead to the feed-water tanks F. A space is left around the smokestack and uptake of the boiler to pass through the tank I and the roof of the locomotive and prevent igniting the roof. The tubes in the generator E are secured at their lower ends,

' while their upper ends are left free, so that ceptacle containing iron turningsj or equiva lent material, to retain the heat and disseminate the steam, and is placed over the burners, and the steam enters on one side and passes out at the other a superheated'stat'e.

The different parts of the locomotive can be made of any suitable material and of anydesired size to suit the different requirements or purposes forwhich itis intended to employ it.

The operation will be readily comprehended by those skilled. in the art to which my invention appertains without further elucidation here.

Among' the many advantages of my invention may be mentioned that it is smokeless,

as there is no coal, wood, or similar fuel used to create smoke. It is noiseless, as the cxhaust-steam does not escape in the air, as usual, but, being distributed in the condenser,- it is muflied. By arranging the engines for operating the locomotive under its floor they are out of sight, and, being inclosed in a casing with hinged sides and ends, they are accessible. By the use of the condensers, allot the exhaust-steam is notonly condensed, but' the water of condensation is utilized and the tanks do not need filling so often.

are prevented to persons and horses, and it can therefore be used on common roads orst-reets. 7

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a street-locomotive, the condenser placed. on the sides of the locomotives, and,

provided with removable perforated plates or diaphragms to condense the exhaust-steam from the engines in a described. g

2. In a street-locomotive, the combination of a boiler having a superheating device connected by pipes with a hydrocarbon-generator with one or more condensersprovided with a series of removable perforated dianpiseless manner, as

By the noiseless and smokeless locomotive accidents phragnls and the perforated inlet pipe for the V exhauststeam, all as specified.

In a street-locomotive, the boiler having a super-heating device connected by a pipe to the hydrocarbon-generator with the lnclined Y engines, the condenser having removable series-of hydrocarbon-burners for generating the steam, in combination with a hydrocarbon generator, a pair of inclined engines arranged under the floor inclosed in a casing, and a condenser havinga series of removable perforated diaphragmsand perforated inlet-pipe for the exhaust-steam, a pump, and a tank under the roof for in ject-ion-water, all as specitied.

6. In a street-locomotive or its equivalent, the combinationof a boiler provided with a snperheating device, (I, and a series of hydrocarbon-burners, with a generator, E, consisting of a casing having removable top and bottom, containing an inner casing with tubes, its upper tube-sheet provided with openings, and a perforated outlet-pipe for mixing. the carbon vapors with the superheated steam, and a pair of inclined engines arranged under the floor, in the manner shown and described.

7. The combination of a boiler in which the steam is generated by burners with hydr0- carbon vapors, and having a superheating device with one or more hydrocarbon-generators, a pair of engines, and one or more con densers provided with removable perforated diaphragms for condensing the eXhanst-steam and producing a noiseless and smokeless locomotive, as and for the purpose set forth.

8. In streetslocomotivcs, the combination of one or more condensers, l-I, having a series of removable perforated diaphragms, with a I tank, I, for the condensing water arranged 1 with tubes secured only at one end and free to expand and contract, a perforated outletpipe, f, for the vapors, the condensers H, tank I, pump G, feed-Water tanks F, and engines B, inclosed in casing all constructed as shown and set forth.

10. The combination, in a street-loc0m0tive, of a pair of inclined engines arranged under the floor of the locomotive and inclosed in a casing, as shown, with the condenser provided with removable perforated plates and a perforated-inlet-pipe, and a generator, constructed as and for the purpose specified.

In testimony whereof I hereby affix my signature in presence of two-witnesses.

THOMAS ROBERTS. \Vitnesses:

J. STANLEY FREDERICK, GEO. W. LINKINS. 

